Yazarlar

• Akbulut, O.(1)
• Bayram, B.(1)
• Serin, Y.(1)
• Tan, M.(1)
• Yanar, M.(1)
• Yolcu, H.(1)

• MakaleYalnız künye2010/r/gumushane/15402
  The effects of seeding patterns, nitrogen and phosphorus fertilizations on production and botanical composition in lucerne-smooth bromegrass mixtures

  Yolcu, H.; Serin, Y.; Tan, M.

  Lucerne and smooth bromegrass are commonly cultivated in irrigated and dry lands in intercropping systems in the world. The aim of this study was to determine the effects of seeding patterns (mixed, alternative and cross-seeding patterns), nitrogen (0, 60, and 120 kg N ha-1) and phosphorus fertilizer (0, 40, 80 and 120 kg P2O5 ha-1) rates on dry matter yields, botanical composition and crude protein yield of lucerne-smooth bromegrass mixture in an intercropping system. The experiment was established in 2001 and data were collected in dry matter yield and legume ratio for four years (2002-2005) and in crude protein yield for two years (2002-2003). The results showed that the highest dry matter yield was produced by a alternative seeding pattern. However, the highest legume ratio and crude protein yield was produced by mixtures sown in cross seeding pattern. Nitrogen fertilizer application decreased legume ratio but increased crude protein yield. Phosphorus fertilizer application had no effect on dry matter yield, legume ratio or crude protein yield of the lucerne-smooth bromegrass mixtures.

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• MakaleYalnız künye2009/r/gumushane/15823
  The effect of average daily gain and age at first calving on reproductive and milk production traits of brown swiss and holstein friesian cattle

  Bayram, B.; Yanar, M.; Akbulut, O.

  The purpose of the study was to determine the effects of average daily gain and age at first calving on the reproductive and milk production traits of Brown Swiss (BS) a.d Holstein Friesian (HF) cattle. For this purpose, daily gains and ages at first calving were divided into two groups which were below the average called as the "slow" or "early" groups and above the average named as "moderate" or "late" groups respectively. BS heifers in the moderate group reached the first insemination age and first calving age 103.7 and 101.7 days earlier (P>0.01) than these in the slow group respectively. The corresponding values for HF heifers were 37.8 and 29.5 days respectively and were not significant. While the average daily gain had negative effects on reproduction traits following the first calving, the daily gain of BS had no effect on the milk production traits in all parities. HF heifers in the moderate group had higher (P>0.05) actual (585 kg) and 305 days milk yield (324 kg) in the second parity. Early calving in both breeds resulted in a significant (P>0.05) reduction in the actual and 305-days milk yield in the first parity. Early calving caused a significant decrease (P>0.05) in the actual milk yield, 305-days milk yield, actual milk fat and 305-days milk fat yield of BS cows in the first parity. Either early or late calving in BS didn't affect on milk traits in second and third parities. The early calving in HF lowered significantly (P>0.05) the actual and 305-days milk yield in first lactation. However, late calving in HF resulted in lower actual milk yield, 305-days milk yield, actual milk fat yield and 305-days milk fat yield in third parity.

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